Google [GOOG] have officially announced that their YouTube service will soon start accepting uploads of 1080p HD video content. Currently the limit is set at 720p, but this will change next week when higher resolution videos can be uploaded.
At the moment there is a 2GB limit and 10 minutes set for uploads and it is unclear if the 2GB limit will need to be increased to accommodate the higher resolution uploads.
The move to full HD comes because of advances in technology. YouTube say they want to provide the best quality for your content.
If you have already uploaded 1080p content in the past then Google say that this content will be reprocessed so that it can display in the resolution it was made in.
We should see the changes come online next week sometime.