Yes, Millennium Pack and this appear to be released the same day.
Premium Pack 18 goes on pre-sale at Jump Festa 2016 for 150 Yen per pack
Each person is limited to 20 packs.
Yami Yugi, Kaiba and the Jump Festa exclusive Kaiba & Blue-Eyes White Dragon Phone Straps are also on sale for 1900 Yen
Source: Weekly Shonen Jump