I would recommend you to be patient and just for your info i´ll explain my case. I attended Qatar´s open day in Madrid in October, went through to the final interview and 2 days later got the call to ask me to proceed with my medical examinations. One week after that i got another call asking me to wait and putting me on hold. Finally three weeks after I received an e-mail thanking me for my time and interest and wishing me the best of lucks in my future endeavours.
Every one of us who made ot through to that final interview remained and still are in contact so i can tell you theres people in my same situation there are some already there and some still waiting for a trip date having had everything approoved.
I just truly wish you the best of lucks and i hope none of this unprofessional treatment is given to you because none of us deserve it.
Having said that and from the feed back i get from those who made it to Doha, be prepared for harsh living conditions and be smart as untill you finish your training you can be rejected.
Truly best of lucks in any case. if you need more info contact me and please kepp the thread updated