Eh!? I'm sorry to ask but what the hell are you smoking? The Note 4 will get 5.0 long before April.
The S5 is already recieving 5.0 in Korea and Poland within weeks of leaked videos of it running Lollipop, the Note 4 won't be far behind as there are now videos of it running 5.0 to.
Perhaps you aren't in the US? There is almost zero hope of Verizon Note 4 getting an update before S6, and other carriers are also likely to delay them.