I dont know the current situation, but when i started in september a guy in the X upgraded in the begining of december. He was hired at the end of september. I know he bid it within a month, but the actual class date was december.
The upgrade is getting longer in the X. It was 4-6 months from the time you put your bid in to when you passed your checkride. I upgraded in 5 months to the day. Alot of guys make a big deal about upgradeing on probation its not. Just do your job and follow SOP's and you will be fine. The upgrade is getting longer because all the pilots from the smaller planes want the X now. The reason is we keep hearing about this pay for weight IE just like UA DL bigger the plane the more $$ you make. I would say the upgrade is now 8-12 months. Please feel free to E-mail me for more information.