(Oct 20th applicant)
I too had a line added to my ECAS between last night and today:
1. We received your application for permanent residence on October 20, 2014.
2. We sent you correspondence acknowledging receipt of your application(s) on February 18, 2015.
3.We started processing your application on February 19, 2015.
I can also log in with my RPRF receipt #. I did my upfront medical on March 11th, no clue if it has even been uploaded by my doctor as yet, but they did say it usually takes 10 business days.
Same thing happened me last Thursday night but nothing came, calling everyday to my lawyer to just check they might have received something, but their answer is always no. Also today called call centre and they said they are not allowed to check my file until 18 months time has passed. Also she mentioned the 18 months time is from the date they received my application . I m worried because on next 10 April , it would be 18 months for me. Fingers crossed!!