从 raspberrypi/linux 代码库来看，新款 Raspberry Pi Zero 的等待可能即将结束。在已合并的拉取请求中，有一个标题为“为 Pi Zero 3 W 和 Pi 4A 添加设备树”，暗示新硬件即将推出，包括一款将取代“服役已久”的 Pi Zero 2 W 的继任者。该开发板发布已有五年。其 512 MB 内存并不算慷慨，但性价比颇高。当时我们认为，其性能更接近 Raspberry Pi 3 而非旗舰级 Pi 4，但只要不一次性打开太多浏览器标签页，性能完全足够。
The wait for a new Raspberry Pi Zero may be nearly over, judging by the raspberrypi/linux repository. Among the merged pull requests is one titled "Add device tree for Pi Zero 3 W and Pi 4A," suggesting new hardware is on the way, including a successor to the very long-in-the-tooth Pi Zero 2 W. The board launched five years ago. Its 512 MB of memory was hardly generous, but it offered considerable bang for the buck. At the time, we reckoned performance was closer to the Raspberry Pi 3 than the flagship Pi 4, but perfectly adequate provided you didn't open too many browser tabs at once.
据 Phoronix 报道，根据源代码树显示，新开发板可能采用 Broadcom BCM2711 芯片，较当前 Zero 所用的 RP3A0 有所升级。若属实，这将带来显著的性能提升，不过尚不清楚是否会保留 Pi 4 所用同款 SoC 的 1.5GHz 主频。散热是个顾虑，因为 Pi 4 在无主动散热情况下高负载运行时发热严重，且温度升高时会降频。
According to the source tree, as reported by Phoronix, the new board could use the Broadcom BCM271, up from the RP3A0 in the current Zero. If so, that would be a significant performance gain, though it's unclear whether the 1.5GHz clock speed of the Pi 4, which uses the same SoC, will be retained. Heat is a concern as the Pi 4 gained a reputation for running hot under load without active cooling, and it throttles performance when temperatures climb.
Zero 这般小巧的板子，散热空间会更小。假如能解决这一难题，它将成为经典 Pi Zero 2 的一款值得升级的产品。目前尚无消息透露其内存容量——鉴于当前内存价格以及需要将价格至少维持在接近 Zero 2 W 的水平（目前仍能以约 18 美元买到），我们很难想象内存会很大。代码还暗示提到了 eMMC 存储，但这不太可能出现在最终产品中，大概是因为成本原因。
A board as small as the Zero will have even less room to shed heat. Assuming that challenge can be met, it would be a worthy upgrade for the venerable Pi Zero 2. There is no word on how much memory it is likely to have – we can't imagine much given the current cost of RAM and the need to keep the price at least close to that of the Zero 2 W, which can still be had for around $18. The code also hints at eMMC storage is mentioned, but that seems unlikely to reach the finished product, probably because of the cost.
与 Pi Zero 3 W 一同出现的还有一款 Raspberry Pi 4 Model A。Zero 3 W 是明确的升级，而 4 Model A 看起来更像是在硬件价格上涨背景下的降本举措。Model A 板卡通常内存较少、没有以太网口，而 4A 似乎只配备单个 HDMI 输出接口，而非两个。在硬件正式发货前，情况仍可能发生变化。
Alongside the Pi Zero 3 W is a Raspberry Pi 4 Model A. Where the Zero 3 W is a clear upgrade, the 4 Model A looks more like a cost-cutting measure amid rising hardware prices. Model A boards typically have less memory, and no Ethernet port, and the 4A appears to have a single HDMI output rather than twp. Things could change before any hardware ships.
我们向树莓派公司询问是否有新产品在研发中，但该公司表示无可奉告。如果价格合适且发热不严重，爱好者们将欢迎时隔五年多后推出的升级版 Pi Zero。与此同时，在元器件成本上涨的时代，精简版 Pi 4 的推出似乎已成定局。®
We asked Raspberry Pi if anything was in the pipeline, but the company said it had nothing to add. Enthusiasts will welcome an upgraded Pi Zero after more than half a decade, provided the price is right and it doesn't run too hot. At the same time, a cut-down Pi 4 carries the whiff of inevitability in an era of rising component costs. ®