From the Yape homepage:

Exactly 10 years has passed since the first public alpha (or rather: WIP) of Yape saw the light of day. It is just as unbelievable as it can get… sheesh.

It started off as an attempt at a more intelligent disassembler when I realized how much fun it really is to learn the hardware AND C++ programming at the same time while dealing with my all time favourite hobby.

I thought this anniversary would be also a nice opportunity to abandon the rather clumsy versioning I have been following in the past. Anyway I have not got much time to make a long rant here, so you will be spared :-)

v1.0 compared to v0.86 are as follows:

• 32-bit and automatic bitdepth option in fullscreen mode (8 bit full screen mode might be slow under newer Windoze’s)
• Copy & paste to/from the clipboard now respects upper/lower case mode.
• Partially implemented 48 bps mode of the T6721A speech LSI.
• G64 image support is no longer read only (yay, at last)
• Reading from open address space.
• Plenty of bugfixes (drive, TED, autostart, monitor etc.)

source: yape.homeserver.hu