they do have a change log on smf you can look at, but the difference between the 2 is very good.
however, if you plan on using tinyportal, you shouldnt upgrade just yet. Bloc is workingg hard to get it up to date, so..
but the difference is that is has several mods included in it, it looks and runs better, even tho its still beta..
wish they would both hurry up lol.. but i can wait..