I just wanted to add my timeline here. The more data the better!
Visa Type: Tier 2 General to ILR / SET(O), same employer for 5 years, no dependents
Date of Online Application: 9 Jan 10:20AM
Date of Email Confirmation (generic 6 months): 10 Jan 6PM
Date of Biometrics: 15 Jan 8AM at London Premium (20 Mark Lane) – there was quite a long wait even though I was the tenth applicant of the day due to families with children having to scan all their documents, but all the Sopra Steria staff seemed so kind with big smiles on their faces which I really appreciated. You can ask them to scan documents that you forgot to scan. I didn’t know but document checking is included in the premium lounge appointment.
Date of Submission: 15 Jan 8AM – I called the UKVCAS helpline on 16 Jan 12PM to check if and when my application was officially submitted. Apparently the time of submission is interpreted by the UKVCAS as the time of checking into your appointment.
Date of Email Decision: 16 Jan 4:44PM
Date of Decision Letter: haven’t received this yet
Date of BRP Delivery: 21 Jan 7:48AM – just shoved into my letterbox…
Good luck to everyone