Interesting promise, 32 lenses in 4 years, or a lens every 45 days... Based on what we've seen, the long marketing hype lead-up periods, then the weeks to months of delays in stock availability, I kind of doubt Canon can deliver that if they operate the way they have been.
If we're objective about this, and go from past experience, we have an idea of what to expect.
There will probably be a whole range of f/1.4 lenses in various focal lengths, they'll probably be L series lenses, which may be around 10% better then their predecessors in IQ, and cost 40-60% more.
Similarly, there will likely be a range of budget lenses to take the place of the old entry level EF and EF-S lenses, they will defnitely be built down to a price. We'll see a whole new range of stupid compromises, so depending on the focal length, some of the lenses will be great value for money, while others will be of limited use.
Working in their favour, Canon now has additional cost cutting options.
They can use incomplete optical lens designs, and take advantage of the additional layer of abstraction that mirrorless cameras place between the user and the subject to hide optical flaws. The fanboys will claim it's to reduce costs, even though Canon will sell these lenses for more than their EF equivalents, even though they're likely cheaper to build than the EF lenses which have better optical correction, which increases the profits for Canon, and offers no financial advantage to the buyer. We'll most likely see more extensive of of cheaper PMo (plastic molded) lens elements too in entry and mid-range lenses like we've started seeing already.
The second cost cutting measure is using the R3, R5 and R6 sensor high ISO performance as an excuse to try to pass off darker (higher aperture) lenses to the market, so they're will likely be a range of entry level and mid-range lenses with apertures around f/8 and higher, for higher prices than their wider aperture (faster) EF equivalents.
The cheaper lenses will have features omitted, such as separate focus and control rings, and a single lens switch to select the two, as we've seen on a few RF lenses already.
Overall, there will be a slight, incremental improvement in most of the new lenses, with a few exceptional but overpriced, L-series standout lenses, and a few over-compromised entry and mid-level lenses. Perhaps, in a quest to try to add features in some L-lenses, the designers who brought us the multifunction bar control on the EOS R, the Spherical Aberration (SA) control on the RF 100mm macro, and the dead-slow AF on the 85mm f/2 macro might come up with a few more 'innovative' ideas that nobody asked for or wants, and we'll get a few oddballs and some lost opportunities. All of these new lenses will be guaranteed to be anywhere from unjustifiably more expensive to absurdly overpriced, depending on how Canon feels on the day they release them.
Let's keep our fingers crossed that we get some great new lens designs that don't cost the world, aren't just slightly improved rehashes of older lenses at a higher cost, and are popular and useful focal lengths and apertures! And keep in mind, Canon is there to make a profit first and foremost, so as they say, caveat emptor...