*Marmite - A delicious yeast based spread, great on toast. Beloved by all true Englishmen worldwide. Note, that latter sentence may not be strictly true.
Or our Vegemite "Vedge ~ ee ~ mite" glad its not "Vedge ~ Amity" but does taste a lot better than that English stuff ;P
Well, as far as OS releases go...
I personally think this will become the most downloaded OS in Apple history. It is offering so much, and for the power users, Yosemite is going to be their bread and butter, with seamless working between iOS Device and OS X.
We need to remember that what Apple showed us on Monday, is only a glimpse into the OS and there will be so much more for us to explore, but the core features they did show, is enough to have people excited, and going to WANT this OS, especially if they have a iPad/Mini, iPhone or iPod.
We have a lot to look forward to, and I think some are not going to like the new look that Yosemite is, (apple were careful to not sure the true look ie: Folders), but when it comes to the crunch, we like (or I do anyway) OS X for the usability and how it easily integrates with all my other products.
iOS 8 has finally come into what it should of been last year IMHO, so I think next year when iOS 9 comes around, they will again be rebuilding it from the ground up and we will see a now OS for our iDevices.
You heard it here first