WoW! - When XTO & BP quit drilling, they REALLY quit drilling. I guess the near-term heavyweights on the Texas side are gonna be Aethon, Rockcliff & Comstock ?
You can add Sabine to that group.
A cursory review of the Weekly Rig discussion on the Main Page will quickly reveal not only which operators are active but where. The bulk of development activity has been in Harrison and Panola counties for months.