[Vocabulary] Each one offers more advanced

[sania-baharat]

The Kindle comes in many different models. There are seven as of today. Each one offers more advanced, unique features, and of course, is priced differently.
I have to questions:

1) Does "as of" mean "as of— used to indicate the time or date when something begins"?
As of today : From past untill today.

 

[emsr2d2]

"As of today" is one of those pointless phrases that gets used a lot. It simply means "today".

Today/At the moment/Right now, seven Kindle models are available.

 

[Raymott]

I've found that it's worse than pointless; it's ambiguous, because it's not always used the same way.
"We've raised $3,000 as of last Tuesday. "As of" means "in the interval between last Tuesday and now". The sentence could also mean "Last Tuesday we had $3,000."
"As of today, we are going to use a new rule." This has a third meaning - "starting today", not 'today'.

 

[sania-baharat]

Is this OK too? I want to avoid using "models".
The Kindle comes in many different models. At the moment, there are seven generations of them.

 

[Raymott]

It depends. Generations doesn't mean models. In any generation, there are likely to be several models, and older generations are probably no longer sold.

 

[sania-baharat]

Thank you Raymott. It was great.

The Kindle comes in many different models. At the moment/Today, there are seven of them.

 

[emsr2d2]

Is there some reason you need to break this into two sentences? The same information can be delivered with:

Today, there are seven models/generations of Kindle available.