Shine has recently posted a preview of the new LuaPlayer for the PSP, version 0.16. Lua is an easy to use scripting language to program games and applications on the fly (no compiling.) Changes include:

v0.16 (all changes for this version by Shine)
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- Wlan:getIPAddress bugfix: now it returns nil on error and the
IP address otherwise
- DNS resolving. Now you can write
Socket.connect("www.luaplayer.org", 80) instead of
Socket.connect("212.227.39.202", 80),
thanks to ideas how to use the resolver lib from PSPRadio
- when loading JPEGs, the file was not closed
- System.md5sum bugfixing for the Windows version
- Wlan.useConnectionConfig index is 1 based instead of 0 based, like usual in Lua
- System.powerTick added: this prevents power off, now you can nail
your PSP on a wall for your electronic painting :-)
- System.createDirectory, System.removeDirectory and System.removeFile added