In a busy year for Elon Musk, in which he designed rockets, unveiled supercars, and got into the satellite business, the billionaire inventor could almost be forgiven for overlooking a promise he made back in June, to reveal a new update to the Tesla Roadster before the end of 2014. But it now looks like Musk will make good on his plan — the Tesla CEO said in a tweet that he'd outline the "fairly exciting update" to the car company's first electric car this week.

@tweethilli Roadster update details coming next week. Several crisis issues w higher priority pushed this out longer than expected. — Elon Musk (@elonmusk) December 19, 2014

Musk first mentioned the planned update in Tesla's annual shareholder meeting back in June, but "crisis issues" — presumably issues like the explosion of a SpaceX Falcon 9 rocket in August — delayed the release of the information. Speaking in May, Musk said the Roadster, which was Tesla's first highway-capable vehicle to be mass-produced, was "step one" in the company's ambitions, and that other companies had made a mistake writing the car off as being for "techno-geeks."