EB1C Current Date or Visa Bulltetin to apply from L1A to GC?

Current status: L1A Blanket (petition expiring at July 2018) While Employeer said me to wait still NOV 2018 to apply for i140 ? What does it mean Current date ? DO I am elgible to apply immediately for i 140? If it is not current date can we apply GC ? I really need to know web site or portal of current date or more details of EB1C status?