Dell has just leaked an impressive amount of tablets online in the roadmap you can see below. This info comes from a reliable tipster and we learn that Dell Android smartphones and Windows Phone devices have been leaked as well. Four new Android slates will be released in the following months, with Dell Gallo coming in April.

This first model runs Android 3.0 Honeycomb and it will be followed by the Dell Sterling, based on the same OS. Dell Opus One and Dell Silver Oak will become official in Q1 2012. These two are also supposed to run Honeycomb, but that could change, if Google releases an update for the OS.

Dell Gallo will receive a handwritting update in the fourth quarter, with the Streak 7 also getting it own update in Q3. Dell will also be releasing Win 7 tablets, codenamed Rosemount and Peju, but info is scarce right now.