Welcome!

theories on getting wisp’s lamp to spawn in your town, based on my experience and others’ in the tags:

you may need to check out the campground, speak with harvey, etc, then time travel/wait a day

you may need to speak with nook and get the storage upgrade, then time travel/wait a day for it to be implemented

you may just need to time travel/wait a day after installing the update, and not need to do any of the above

you may not be able to find the lamp on a day when someone is plotting (this is just a shot in the dark though! it may have been other factors that prevented my lamp from spawning, like one of the above things)

or you may need to do more than one of the above

the lamp seems to be able to spawn at any time of day, anywhere in your town - i got mine at around eleven am, and i’ve seen people get theirs at various other times

also, it seems like the lamp is the only way to scan amiibos

 I can’t find anything on google about what the update includes so I took bits and pieces from Reddit. (Thanks r/animalcrossing !)

Amiibo functionality, invite characters to park in a special new area. Works with all AC Amiibo, the cards, Splatoon and Zelda Amiibo.

Wisp appears once you progress to a certain point (unfortunately this is a bit vague)

Amiibo villagers can be talked to, invited to camp, or invited to live in your town permanently from Wisp

Wisp can only grant one wish per day

If your town is full but you want an amiibo to move in, you can kick out one of your existing villagers by choice

Amiibo camera that allows you to take photos with villagers

HHD’s decorating mechanics added once you have the necessary upgrades. Talk to Lottie at Nook’s Homes in order to unlock

Requires house to have a second floor and new secret storeroom upgrade

Clothes can now be hung on walls

Storeroom upgrade provides tons of new storage space 

MEOW coupons, a new currency from doing tasks. Used for purchasing items at the RV park store and furniture inside RVs.

MEOW coupons can be exchanged for bells at the ATM at a rate of 3,000 bells per coupon

Tasks are now displayed on your TPC

New minigames obtained by having the WiiU/N3DS furniture

Desert Island Escape

Puzzle League

Special items and furniture if you link up save data from HHD  

Can liquidate your town assets when resetting your town.

Can choose to either keep catalogue or sell for more bells

Money can be gained instantly as one giant sum or as 100 daily payments with 10% interest

Ability to silence people in Club Tortimer

New island minigames

Ability to sit on rocks

New villagers brought back from older AC games

Free weeding if you haven’t been to your town in a while

Nintendo 3DS image share can now be used in-game

Balloons no longer exclusively contain balloon furniture and can now drop any kind of furniture

You can now shake trees with a net or fishing rod equipped

New items obtainable through fortune cookies including the Wii U and N3DS furniture

Your character’s arms will now match the color of your mii mask

New clothes/accessories 

Some are only obtainable through amiibo villagers

You can now interact with furniture items while sitting near them

Glitches have been patched (RIP net glitch)