Your guess is as good as ours.  On their website it says the MSRP is $62 but that was published sometime in the late summer, early fall last year.  They never did go up, but who knows.  We just have to wait and see I guess.

Would you happen to know if the pro v1 series that we are currently using will still be available on the market?

While the MSRP has been $62, the street price has been $47.99.  If you buy a sleeve, the price will be higher than that pro-rated price per dozen, but no more than $62. 

You can still buy the current model at $39.99 both online at major retail sporting goods stores.  The new one will be at least the $47.99.  The current version will not be produced so supplies will be limited.  Last year, after the holiday sales, the former NXT and NXT Tour disappeared with only new NXT Tours and Velocity available in that range.

In the past, Titleist has had online specials of 4 for 3 pricing in February or March.  ...Are ya feeling lucky? 

Just depends on the store.  I know that my local Dick's and Sports Authority still carry the previous model of ProV1 and ProV1x.  I would expect for them to continue this with the current model when the new one is released, but at a lower price.

My guess is they will be around 50 per dozen in order to keep profit margins healthy, I will probably stock up on prior year models unless the new ones offer substantial improvement