AR750 - where is 2.264 (stable)?

Why is the 2.264 firmware for the AR750 not available?

I only see 2.263. Compared to say:

I do see something in the testing directory:

Is that safe to use?


Yes please use the testing firmware now. We are upgrading to 2.27 now.

What changes are there in 2.27?

You can see this.