内容来源：https://www.engadget.com/2282502/smart-tv-brands-offer-longest-software-support/

内容总结：

智能电视软件支持年限因品牌而异，尚无统一标准。三星承诺为2024年及之后的部分机型提供七年Tizen系统更新，LG则为2022年起的新品保证四年webOS更新。索尼和TCL未设固定期限，具体支持时间因型号而异。海信在欧洲市场的VIDAA系统承诺最长八年支持，但在美国多采用安卓或Roku等第三方系统，支持期限取决于系统提供方。Roku、Vizio和Insignia等品牌也未公布明确的支持政策，但Roku因专注软件更新，其电视预期寿命较为乐观。若电视不再获得官方支持，购买外接流媒体设备是延长使用寿命、继续使用最新应用的经济之选。

中文翻译：

哪些智能电视品牌的软件支持时间最长？
并非所有智能电视都能长期获得更新，有些甚至没有任何明确的政策。
我们可能会从链接购买中获得佣金。
无论你买的电视价格如何，你很可能都把它视为一项长期投资。因此，你期望尽可能长时间地获得厂商的支持。
在过去，买电视时你唯一需要担心的就是它最终会坏掉。但有了智能电视，还需要考虑软件问题。大多数现代电视都自带操作系统和应用程序，需要定期更新以获得最佳性能并修补安全问题。
遗憾的是，关于电视能获得多长时间的支持，并没有统一标准。各厂商之间差异很大，而且相关信息并不总是那么容易找到。不过你很幸运，我们已经替你完成了这项繁琐的调研工作。
三星提供长期软件支持，但并非每个品牌都能与之匹敌
如果你拥有一台2024年或之后的三星电视，三星将为其基于Linux的Tizen操作系统提供七年的软件更新。这一承诺于2024年做出，也适用于2023年的部分机型。这意味着如果你有一台2024年的三星电视，你可以预期应用程序流畅运行，固件更新至少会持续到2031年。较老的机型不会获得Tizen的重大新版本，但它们可能会偶尔收到维护或安全固件更新。
2024年初，LG推出了webOS Re:New计划，保证2022年及以后的电视机型获得四年的webOS更新。与最新电视机型上的最新webOS版本相比，这些更新会延迟一年。例如，webOS 26随2026年的电视首发，将在一年后推送到2025年的电视上。
索尼没有为其电视提供固定的支持期限。相反，支持期限因你所拥有的机型而异。例如，对于2025年的索尼Bravia K-65XR80M2 OLED，索尼的支持页面将2029年4月列为终止支持日期。与此同时，同样属于2025年产品线的索尼Bravia 2 II K-65S25VM2，显然将获得安全更新直到2030年6月。
与LG和三星不同，索尼没有使用专有的电视操作系统。2021年之后发布的机型使用Google TV平台；在此之前是Android TV。
和索尼一样，TCL也不保证固定的支持期限。我们真正能参考的只有该公司的软件安全页面，其中声称“通常”在“某款设备型号首次出货”后至少提供两年的安全更新。不过该页面并未明确提及电视。根据机型不同，TCL电视主要运行Google TV（较老机型为Android TV）或Roku TV。
软件支持也因地区而异
在欧洲，大多数海信电视运行该公司专有的VIDAA操作系统。自2025年起，海信承诺在这些机型上提供“长达”八年的支持。对于美国用户来说不幸的是，你不太可能买到使用VIDAA的海信电视，许多机型反而运行Android TV、Fire TV、Google TV或Roku TV。因此，长期支持掌握在你的电视所搭载操作系统的公司手中。
长期以来，Roku以其流媒体设备和操作系统而闻名，并将系统授权给上述电视品牌。但如果你购买的是Roku自家的Pro、Plus或Select系列电视呢？Roku没有为这些电视指定固定的支持期限，而且首款产品于2023年才推出，因此现在还太早，无法总结出规律。但考虑到软件是该公司的主营业务，且它频繁推送更新，你可以合理预期其电视拥有较长的使用寿命。Roku也没有公布其流媒体播放器的终止支持日期，不过有人声称一台设备用了长达10年。
那像Vizio和Insignia这样的超低价电视品牌呢？前者运行自家的Vizio OS，其功能与更知名的竞争对手大致相同，并包含300多个应用程序。Vizio定期推送自动固件更新，但不保证为其任何机型提供固定期限的支持。
Insignia电视采用亚马逊的Fire OS，因此你可以认为，只要亚马逊承诺为其自家设备提供软件和安全更新，你就能获得同样的支持。亚马逊Fire TV软件安全更新页面表示，这一承诺至少为四年。
当你的机型不再获得支持时，不必烦恼。购买一个流媒体播放器是一种廉价的方式，可以延长智能电视的使用寿命，并保持对喜爱应用程序最新版本的访问。

英文来源：

Which smart TV brands offer the longest software support?
Not all smart TVs will receive updates for long, and some don't have any specific policy.
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No matter the price of a TV you buy, you likely consider it as a long-term investment. You thus expect it to receive support from the manufacturer for as long as possible.
In olden times, when you bought a TV, the only worry you had was it eventually breaking. But with smart TVs, there's also software to consider. Most modern TVs come with their own operating systems and apps, and need to be updated semi-regularly for the best performance and to patch security issues.
Unfortunately, there's no universal standard for how long you can expect a TV to get support for. It varies significantly by manufacturer, and the relevant information isn't always easy to find. But you're in luck, as we've done the tedious work of finding out.
Samsung offers long-term software support, but not every brand matches that commitment
If you have a Samsung TV from 2024 or later, Samsung will provide seven years of software updates for its Linux-based Tizen OS. This commitment, made in 2024, also applies to select models from 2023. That means if you have a Samsung TV from 2024, you can expect apps to work smoothly and firmware updates to roll out until at least 2031. Older models won't get major new versions of Tizen. They'll likely receive occasional maintenance or security firmware updates, though.
In early 2024, LG introduced the webOS Re:New program, which guarantees four years of webOS updates for TV models from 2022 onwards. These come with a one-year delay compared to the latest webOS release on the newest TV models. For example, webOS 26 debuted with 2026's TVs, and will come to a 2025 TV one year later.
Sony doesn't offer a fixed period of support for its TVs. Rather, it differs depending on which model you own. For example, for 2025's Sony Bravia K-65XR80M2 OLED, Sony's support page has April 2029 as the end-of-life date. Meanwhile, the Sony Bravia 2 II K-65S25VM2, which was also part of the 2025 lineup, will apparently receive security updates until June 2030.
Unlike LG and Samsung, Sony doesn't have use a proprietary TV operating system. Models released after 2021 use the Google TV platform; prior to that it was Android TV.
Like Sony, TCL doesn't guarantee a fixed period of support. All we really have to go on is the company's Software Security page, where it claims to "typically" provide security updates for at least two years after "the first shipment of a certain device model." This page doesn't explicitly mention TVs, though. Depending on the model, TCL sets primarily run on Google TV (or Android TV for older models) or Roku TV.
Software support also varies by region
In Europe, the majority of Hisense TVs run on the company's proprietary VIDAA OS. Since 2025, it has pledged support for "up to" a whopping eight years on these models. Unfortunately for those in the US, you're less likely to pick up a Hisense TV that uses VIDAA, with many models instead running Android TV, Fire TV, Google TV or Roku TV. Therefore, long-term support is in the hands of the company whose OS your TV ships with.
For a long time, Roku was known for its streaming devices and operating system that it licenses to TV brands like those listed above. But what if you buy one of Roku's own Pro, Plus or Select Series TVs? Roku doesn't specify a fixed period of support for these, and the first came out in 2023, so it's still too early to establish a pattern. But given that software is the company's focus and it frequently pushes out updates, you can reasonably expect a healthy lifespan for its TVs. Roku doesn't publish end-of-life dates for its streaming boxes either, though some people claim to have used one unit for as long as 10 years.
What about the ultra-affordable TV brands like Vizio and Insignia? The former runs its own Vizio OS, which functions in much the same way as its better-known rivals and includes more than 300 apps. Vizio pushes out automatic firmware updates regularly, but doesn't guarantee a fixed period of support for any of its models.
Insignia TVs employ Amazon's Fire OS, so you can assume you'll get software and security updates for as long as Amazon commits to with its own devices. The Amazon Fire TV Software Security Updates page says that commitment is at least four years.
Don't fret once your model is out of support. Buying a streaming box is an inexpensive way to extend your smart TV's life and maintain access to updated versions of your favorite apps.