Canon. New Canon teaser for April 24th Canon Hong Kong posted a new teaser on their Facebook page for what it seems to be a new, fast prime lens to be announced on April 24th.
Here is the translated text: New Canon EF lenses. This Canon lens date list is now being actively maintained at our lens info site EFlens.com Canon Lenses since 1987 (as of Jan. 2014) The links go to the listing for the lens on our EFLens.com site.
Note: The most up to date version of this table, as well as full lens info and specs is to be found at: Canon Rumors.