UPDATE: 3:38 p.m. EDT — Tesla Motors announced Tuesday that the company would begin manufacturing their Model S and Model X vehicles with P100D battery packs, which would extend the range of the cars. Read the International Business Times story here.

Original Story —Just days after Tesla Motors announced it would sweeten the deal for anyone who is considering a Model S or Model X and offer a shorter, two-year lease, CEO Elon Musk announced on Twitter that the company would have more news to share Tuesday.

In the tweet, Musk provided little clues as to what the announcement would be. “Tesla product announcement at noon California time today,” Musk wrote.

But, even just that was enough to send Tesla fans into a frenzy and drive up stock prices for the company. Shortly after 11 a.m. EDT, Tesla stocks spiked roughly two percent by the afternoon. SolarCity, the solar power systems company recently acquired by Tesla, also saw its stock jump by around 1 percent.

It’s uncertain what Musk and Tesla will announce Tuesday afternoon but Twitter users weren’t shy about voicing their predictions, jokes and hopes.

Some theorized that the company would be announcing the automaker’s most powerful battery option yet, a 100 kilowatt hour battery that has been the subject of rumors for months. Earlier this year, a simple photo of a Model S with a “100” emoji prompted the speculation that the battery would soon be released. Tesla didn’t have an announcement at the time, but told Tech Insider that they don’t comment on rumor or speculation as a matter of course.

The announcement days ago that short-term leases would be available for a short time (the offer expires Sept. 12) drew scrutiny of the company with some wondering if the push for new orders was made in order to boost their delivery count before the third fiscal quarter closes. Another theory did accompany that lease offer: That Tesla would roll out a new feature — like, say, that battery — in September.

Maybe they’re just ahead of schedule.