Here is the stable 0.8.10 release and the mtn builds based on it

Release notes are published under the official www.i2p2.i2p.xyz page.

No more headless installer files - thanks to a update of the installer package the i2pinstall.exe can be run headless!
Use: java -jar i2pinstall-0.8.10.exe -console.

i2psource-0.8.10.tar.bz2 sourcecode
i2psource-0.8.10.tar.bz2.sig .sig file for the source
i2pinstall-0.8.10.exe installer
i2pupdate-0.8.10.zip update package

0.8.10-5 - deimos moved.
A lot of small quirks and improvements to raise tunnel built success and get new routers better into the game.
zzz forum entry for 0.8.10-5.
zzz forum entry for 0.8.10-4.
zzz forum entry for 0.8.10-3.
zzz forum entry for 0.8.10-2.
zzz forum entry for 0.8.10-1.