No they aren’t, unless the new ones hit the shelves in the last 30 days.
Just bought some new ones last month, still have the 15-30 second warm up time before they give off their full luminescence.
I just installed some in my office last week. When I came in this morning after they were not used for two days, they took at least 15 sec. to become fully bright.
Curiosity asking - where did you buy them from?