It's more robust and comprehensive. Plus it supports direct word compiles to the MSP430 flash.
It weighs just over 8KB flash + 900 bytes RAM. It support an 8KB (4096 cell) dictionary, so there is plenty of room to play.
The PC/Unix version still works well too. I use it for new dictionary development and create a TI file of the compiled dictionary for the MSP430.
Nothing automated yet and very little documentation. But, hey you can define words, loop and do some "meta" stuff.