I think 60M YE for 3DS and 12.8 YE for Wii U

73M LT 3DS 18M LT Wii U

I think 59 M YE for 3ds and 13.5 M for Wii U seems reasonable.

Wii u- 12million, 3ds- 59
LID wiiu-19m, 3ds-80m

Let's see... I'll be safe on this:

3DS: 59.5m YE / 70m LT
Wii U: 12m YE / 17m LT

63 million 3ds and 13.5 Wii Us by the end of the year
80 million for 3DS LT and 20 million for Wii U LT

60 million 3ds and 13 million Wii U by the end of the year.
65 million 3ds and 15 million Wii U life time.

3DS is at 55m thus far. Last year it sold just over 4m as of the same period. It would take a miracle for it to sell 63m.

My old 3DS estimate seems to be quite wrong, so by the end of this year 59m 3DS and 70m by the end of its lifespam. WiiU may reach 12m this year and 16 lifetime. Both predictions are made having into account I think the NX will come next year.

3DS: YE - 59m, LT - 70m
Wii U: YE - 12.5m, LT - 16m

IT would take a bigger miracle for it to end up with LT sales of 80 million though. Not to mention for the Wii U to end up at 20 million.