First let me say congratulations for choosing a beautiful cat and having wonderful taste!
It is not necessary at all to have your cat shaved once a year. I have 5 persians and never shave them. And in fact some breeders believe that the fur has a chance of not growing back as nice. I can't imagine why it would be necessary. Maybe if someone is negligent in grooming the cat is the only reason I can think of.
I bathe and groom my cats frequently. Jake is a Red persian and I bathe him about every 2-3 weeks. Red's tend to get greasy quickly. Peaches, Hallie, Henrietta and Carmella don't get dirty or greasy easily so I bathe them about once a month, sometimes 2 months. When I bathe them regularly, they are less prone to mats in the fur. I have a page on my website on grooming. I've gotten a lot of advise from Mary at Petmar Persians and Jean from Steeplechase persians! It also helps to blow dry your cat after bathing it. I run a comb through their fur daily. I don't spend tons of time. Just a quick run through behind their ears, & under their chin. Then I just run a soft brush through them quickly. I don't spend more then 2 minutes on each cat but if I keep up on it, that's all they need!
You're welcome to check out the grooming page on my website. You'll find a button for it at the bottom of my homepage. There are step by step instructions for bathing and blow drying.
Feel free to PM me anytime!
Oh yes! I forgot to mention the eyes! Make sure to wipe them at least once a day. Twice a day if he tears alot. You can use warm water and a soft makeup sponge/pad or you can buy products to wash the eyes with. I use Eye Envy on my light colored Persians. It's a little pricey but lasts a long time and works great for removing and preventing stains!