Here’s what's going on with the release of Turing Pi 2.5:

We discovered an issue with the HDMI signal being unstable. While it worked fine in earlier tests, recent tests showed inconsistencies. We believe this is due to the HDMI signal passing through both the A and B channels simultaneously to be compatible with Raspberry Pi and RK1, causing interference with 4K displays. We fixed this by adding an extra switch.
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We built a test board to validate our theory, and the results were positive. Now, we’re waiting for the new iteration of the Turing Pi board, which is in production. Once we receive the new samples, we’ll test them. If everything checks out, we’ll start mass production.

We’ve also resolved the issues with the USB-C ports by switching the BMC_UART3 header with the UART3_DEBUG.
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We apologize for the delays and are doing everything possible to speed up the process without compromising quality. Stay tuned for more updates!