UPDATE - Tuesday 8th April: Confirmed on Twitter earlier this morning, DP4 is now available on PC. To download, go to the PES 2014 main menu, scroll left to Statistics and then select Data Pack Update.
Konami has announced the PC version of Data Pack 4 will be released on Tuesday 8th April.
Available since late January for PS3 and Xbox 360, Data Pack 4 implements all deals which were completed in the January transfer window, as well as adding 16 pairs of boots and five new match balls.
European PES Community Manager Adam Bhatti has also confirmed there's "still more to come" for PC users - most likely the release of Data Pack 5 and Patch 1.10, both of which arrived last week for consoles.
As soon as we receive more details regarding the PC release of DP5 and 1.10, we'll let you know by updating this post.
Data Pack 4: Updated transfers, new boots and match balls: