That'll be up to the GMs and if there are more major bugs than involve characters it most likely will happen, although not nessecarily at the end of Beta. Plus this should technically be in the Trickster section.
ya as they have said it is currently unknown to us, either way playing in the beta is great even with a wipe we can lvl so much faster come retail than others who missed OpenBeta. I just hope they do announce weither they are wiping or not fairly early into the OB if they are goign to wipe that means Ill make 1 of every char ect really get to know the game / chars / skills everything that way Im very ready come retail and I know exactly what class I find the most fun in this game.