BoomTown has spit out an interview about the CS Source Engine port with Doug Lombardi, the interview vitally notes that some older CS maps will be redone for the CS source engine version along with all the weapons and characters, of course. Here's a slice of the preview:

“Actually we haven’t taken Half-Life as far as Counter-Strike. We’ve only converted the basic stuff and the majority of material from Half-Life 2 ending up in Half-Life will mostly be invisible. But from then on it’s actually up to players themselves if they want to alter the content of the game once it’s running on the new engine. If anybody feels like ‘upgrading’ Half-Life with Half-Life 2 content it’s cool with us.”

For the full interview, click here. As always, please, enjoy!