"will simultaneously be" is a correct and usable part of a sentence in written English.
You can use it when you want to express that two or more things will happen at the same time. For example: "The new train lines will simultaneously be more efficient and cost-effective."
In a labour force of 28m people, a possible loss of 100,000 jobs is trivial, given that other trends will simultaneously be creating thousands of jobs too.
Not the improbability of hitting the lottery; the improbability that everyone in the pool will simultaneously be on the brink of financial or personal collapse, or both.
In my (mercifully short) opening speech, I brought up Oddworld founder, Lorne Lanning, who has just announced Citizen Siege, a project which will simultaneously be released as an animated movie and videogame.
The minimovies, whatever their subjects may be, will also appear at the Tribeca Film Festival in New York and elsewhere, and will simultaneously be circulated on the Web, both through a planned site and through syndication.
ESPN will show live, exclusive coverage of up to 25 FA Cup matches per season, including one exclusive semi-final match, while the FA Cup final will simultaneously be broadcast on both ESPN and ITV.
Random House's prolific new signing James Patterson is expected to produce up to eight novels, and as he was acquired expensively from Hachette, his reliable contribution to that group's total (three entries in 2007, at 36, 57 and 70) will simultaneously be eliminated.
If x and y are incomparable, then the numbers of tankers and fighter planes in x will not simultaneously be less or more than that in y.
All recruited families will thus simultaneously be allocated to the (I) or (U) arms, this marking the onset of the trial period.
And because the software and the data are uncoupled, the risk that both will be harmed simultaneously is significantly reduced.
Whether standalone torcetrapib and the combination pill will reach the market simultaneously is not clear.
Taking place simultaneously will be the annual Pori Jazz Kids Festival, through July 16.
