New Achievements in the Games for Windows edition suggest episode is on the way.
The Xbox 360 exclusivity of the Grand Theft Auto 4 episodes - The Lost and Damned and The Ballad of Gay Tony - has been a major coup for Microsoft, giving gamers a reason to pick up an Xbox 360 ahead of a PS3.
However, it would appear that the first of these episodes, The Lost and Damned, is to get a PC release.
gta4.net reports that a new update for the PC edition of the game has added a set of new Achievements, Achievements that relate to The Lost and Damned.
A screen grab showing the Achievements can be seen here.