I believed that the state's attorneys would have been able to convince a jury that Casey killing Caylee was premeditated even prior to the release of this information.
No one other than someone who planned to kill their child wraps duct tape around the head such that it is stuck in the child's hair + has a heart sticker lying around to place over the duct tape covering their child's mouth. Yes, I've read/heard the arguments that Casey could have placed the heart sticker on the duct tape after Caylee died, even though she may not have intended for Caylee to die, because she "loved" Caylee and the death was an accident, etc., but I never believed that line of reasoning would resonate with a jury for many reasons, beginning, chronologically speaking, with the fact that Casey waited 30+ days to report Caylee missing, the fact that Casey only reported Caylee missing because Cindy placed the call to 911, etc., etc., etc. I just couldn't imagine a jury refusing to convict Casey for 1st degree murder.
With this additional information - it's as many here have been saying: LE has much more than we'd previously been given, and the case just continues to grow stronger each time we become privy to said information.
Way to go LE!
If it can be established that this is an entry from 2008, then I believe that the state's attorneys will shortly be placing the possibility of the DP back on the table, and with good reason.