The parity issue here is that some of the new splashes (not including the COVID-19 splashes) on the Java 1.16-RC1 are not in Bedrock Edition. The splashes are:
This parrot is no more! It has ceased to be!
Music by Lena Raine!
Aww man!
#minecraftfarms
And my pickaxe!
Envision! Create! Share!
Fabulous graphics!
Also try Minecraft Dungeons!
Vanilla!
May contain traces of citrus!
Zoglin!?
i think because beta versions have beta splashes. and when release come, they will eventually put them in