According to this Steam news we will be seeing de_inferno on Source:
We hope everyone is enjoying the Half-Life 2: Deathmatch contest winning maps that were released earlier this week.
The next big Counter-Strike release is set to include two maps. The first map will be de_port, previously mentioned here. This map is set in a resupply port for outgoing ships. The gameplay is designed for a balanced layout employing a mix of long sightlines with cover and close quarters fighting environments. The second map will be a completely redone de_inferno, a historical favorite at CS tournaments and competions. We'll be releasing some screenshots or other media from both of these maps in the next week or two.
They have also included a screenshot from Aftermath, although it doesn't reveal much.
See it all here.