Just in case, the PT4 70% Discount for PT3-Users ist only valid until 25th november. 
And its just so unfair to quote one sentence out of statement.
Full quote from 07.11.12:
The PT4 beta with Full Tilt support was in the pipeline for 3 weeks+ and was supposed to be released well over a week ago. Unfortunately, we had a major showstopper which took quite a while to get fixed and delayed the release by 1-1.5 weeks. It did not take us "only" a day to get this beta out -- and in fact, we had to rush it out faster than we typically like. Due to the showstopper delaying our PT4 release, it also has taken resources away from getting a PT3 release out. In addition, we have stated that PT3 will not be getting any new features and that we would only continue to support existing sites. Full Tilt is essentially a "new site" as quite a few things have changed and there was a discussion previously whether we would even support this new site in PT3. After internal discussions, we unanimously agreed that we would add support in PT3; however, it would be after PT4 and could take up to 2 weeks which we do not believe is an unreasonable amount of time. We have heard your complaints and we are trying our best to get a PT3 release out a soon as possible (faster than initially stated). I can promise you that it is not a lack of effort or interest. Best regards, Derek
https://www.pokertracker.com/forums/viewtopic.php?f=15&t=44616
Every company would always support their new product first. And they had quite some problems with PT4 Betas and Full Tilt the first days.
And I don´t know if you ever had to do programming, but its really hard to figure out deadlines for software-programming.
There was an update for PT3 yesterday, for Full Tilt Support. (wow, so fast, its a conspiracy again. ♦ )
Just my 2 cents