Mentioning that White updated Strunk does not absolve you of peddling old wine skins as new. However timeless the Kingdom, this collection is not helpful for present work. That you feature it's virtues in present tense leads me to question whether your marketing department is getting out of hand. To preach clarity with unclear copy leads me to be wary of the offer and publisher--despite the benefits of your excellent products.

Useful anecdotes, well cited.