What time of year do latest nav discs come out?

I recently bought my mom a Gen 2 (from Steve at AutoBeYours, hi Steve!) and it's great, but has a way old nav disc in it.

I could buy her the GEN5E-16 disc now, but isn't this about the right time of year for the -17 ones to be coming out?

I e-mailed the parts manager at the dealership near mom, and he thought they wouldn't be available until Spring, but that doesn't seem like what I am used to seeing here.

I know I could easily buy the cheap bootlegs of the -16 disc now. I assume those don't come out quite immediately when a new edition from Toyota comes out? If the real -17 disc is coming soon, I'd probably even pay list for it just to have it quickly.

Does anybody have a good sense of what time of year these have been coming out historically, or a way to find out when they are expected for this year?

-Chap

 

Thanks! And how does one find out when they have come out? Would there be any kind of announcement anywhere? Just keep searching for 86271-GEN5E-17 until something shows up? Is there a way to place an advance order?

-Chap

 

Well, it seems to have a Toyota FAQ entry that also says "typically updated annually in the fall".

I'm still not getting any hits on the -17 number though. Nearly December....

-Chap

 

Welp, Metro Toyota is now showing the -17 discs for GEN06 and GENX5 (two different flavors of nav in 2010-11 Gen 3s), but they do not (yet?) show anything newer than -16 for GEN5E/GEN5W (2006-09 Gen 2s). GEN04 (2004-05 Gen 2s) stop at -15, and GN23E/GN23W (2001-03 Gen 1s) stop at -13.

Those last two look like each disc series stopped ten years after the last model year of the cars using them. But that doesn't explain why there wouldn't be a -17 for GEN5E/GEN5W ... that last model year was 2009, so wouldn't it be nice if they'd continue that series up to -19?

I wonder if they've really stopped that series, or the new release just hasn't happened yet.

-Chap