I believe that Holiday 08 will be the high watermark for the Wii. The has gotten off to such an amazing start I believe it will peak a bit sooner than the average console. For HW I believe it will look something like this.
Week ending
Nov. 8th- 500k WW
Nov. 15th- 550k **Wii supply begins it holiday, and early shoppers snatch Wiis up.
Nov. 22nd- 600k **Heavy Supply contrains begin as Ebay sellers(hoping for a repeat of last year) and early shoppers buy up any liquid stock.
Nov. 29th- 1000k **Black friday in US, 700k of sales from NA alone. 250k from others 50k from Japan
Dec. 6th- 750k **Holidays season rush begins full swing, Wii sales dip to around 300k in NA due to post BF doldrums.
Dec 13th- 850k **Supply kicks back in, Wii is now supply contrained in most territories minus eastern europe, and Japan
Dec 20th- 1100k **Japan sells out, more shipments arrive, massive NA and Others sales, Japan picks up. 550-450-100
Dec 27th- 1600k **Huge week, has Cmas eve, and day after cmas in same week, Massive shipment arrive on Sunday morning. 900k in NA, 500k in Others 200k in Japan.
Jan 3rd- 500k **Good week in Japan due to New Years holidays there, Wii selling good in other place due to gift cards and cmas money. 200k in NA, 150k in Others, 150k in Japan.
Total Wii HW Holiday 09 sales- 7.45 million
This is not counting elevated October sales. Also, a price drop in Japan could do wonders, and affect the total end result by 250-500k, price reduction in Others or NA not in forseable future.
The Amount of Software that will move with these console will be astronomical. Families with 3 kids who buy their kids a Wii will most likely get each kid "their" own game. Not mention that the kids will use money from Grandma and Relatives to buy games for their shiny new Wiis.
Expect many "older" titles to see major holiday boost- SMG, SSBB, MKWii, M&S, and Zelda(less than others). I could also see WiiFit doing very well as families that already have a Wii will buy WiiFit to get mom involved or because they think their kids are fat. I think MKWii will see the largest boost of any game.
The new Wii games will see great sales as well because they will ride marketing hype into the holidays. I expecy Madden on Wii to be a Major force this year in sales, and we can never forget the New Guiter Hero will will no doupt be HEAVILY pushed on the Wii.
So basically we have a massive amount of Hardware going out, a massive amount of HW already sold (around 35 million heading into Nov) I believe that all of this will equal a legendary Holiday seasom that the Wii itself will never equal again.
Things to look for are the sale of the Wii version of GHIV, COD4, Sonic Unleashed, The Conduit(hit or Miss), and the quality of the Wii 1st and 3rd party holiday line-up that is still unknown. I believe SMG will rebound to get over 1 million in sales in NA alone this holiday season. MKWii and SSBB will both sell an addition 2 million over the holidays with MKWii sell a bit more.
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut