Nintendo of Europe seems to have a pretty busy second half of the year between 3DS and Switch releases. Considering they just announced games such as Yo-Kai Watch 2 last week, we can probably expect even more releases and more limited editions (both Hyrule Warriors titles and both Xenoblade Chronicles games got limited editions for example, FE Warriors already has a limited edition announced for Japan).
Retail software
Limited Editions
Hardware
And this doesn't even include all the amiibo releases.
Retail software
July
Splatoon 2 - July 21
Hey! Pikmin - July 28
Miitopia - July 28
Dr. Kawashima's Devilish Brain Training: Can you stay focused? - July 28
September
Monster Hunter Stories (distributed by Nintendo of Europe) - September 8
Metroid: Samus Returns - September 15
Pokemon Silver Edition - September 22
Pokemon Gold Edition - September 22
Pokken DX - September 22
YO-KAI WATCH 2: Psychic Specters - September 29
October
Mario & Luigi: Superstar Saga + Bowser's Minions - October 6
Story of Seasons: Trio of Towns - October 13
Super Mario Odyssey - October 27
November
Pokémon Ultra Sun - November 17
Pokémon Ultra Moon - November 17
2017
Fire Emblem Warriors for Nintendo Switch - Fall
Fire Emblem Warriors for Nintendo 3DS - Fall
Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy - Fall
Untitled Kirby game for Nintendo 3DS - Winter
Xenoblade Chronicles 2 - Winter
The Elder Scrolls V: Skyrim - Winter
Limited Editions
Metroid: Samus Returns - Legacy Edition - September 15
Pokémon Ultra Sun - Fan-Edition - November 17
Pokémon Ultra Moon - Fan-Edition - November 17
Pokémon Ultra Sun & Pokémon Ultra Moon - Ultra Dual Edition - November 17
Hardware
Nintendo Switch - Neon Red/Blue + Splatoon 2 - July 21
Nintendo Switch Pro Controller - Splatoon 2 Edition - July 21
Nintendo Switch Accessory Set (Carry Case + Screen Protector) - Splatoon 2 Edition - July 21
Joy-Con Pair (Neon Green/Neon Pink) - July 28
New Nintendo 2DS XL - Black and Turquoise - July 28
New Nintendo 2DS XL - White and Orange - July 28
Nintendo Classic Mini: Super Nintendo Entertainment System - September 29
Nintendo USB AC Adapter - September 29
And this doesn't even include all the amiibo releases.