I hope, but I'm not holding my breath. I would also say that they would leave this update a few days and then on sunday or monday come out with it and then maybe a free weekend next weekend if they were going to do that. Although, I'm fairly sure this was it for now. Seeing as though it was an update lacking as much content as the others have recently you might be able to predict that the next major update will be a month to a month and a half away instead of the usual two and a half to three.
EDIT: My theory of a free weekend may be validated somewhat, I don't know if this was a misspressed button or what but on my friend's computer TF2 was available for pre-load it said. He pre-loaded it but cannot play it yet, his parents won't let him get an M rated game until hes 17 so he'll be buying TF2 in another two months, but he plays all the free weekends for it so this got him hopeful that there will be one soon.