The backstory of the great Transformer relic, the AllSpark, is very similar to the one detailed in Transformers (2007). Not surprising, as producers Roberto Orci and Alex Kurtzman have also worked as the script-writers for that movie.
When they created Sky-Lynx, the designers had no idea what his name would be. They were surprised when they found out that he would be called Sky-Lynx, as the name originally belonged to a benevolent and intelligent Autobot character, whereas in this movie, he is a brutish, slow-thinking evil Predacon.
The trivia item below may give away important plot points.
Optimus Prime's ultimate sacrifice, carrying the Sparks of all the deceased and unborn Transformers and plunging into Cybertron's core to allow his planet to once again bear new life, exactly mirrors the fate of Optimus Primal from the finale of Beast Machines: Transformers (1999).