"although preliminary" is correct and usable in written English.
You can use it to introduce an idea that is tentative or not fully thought through. For example, "Although preliminary, this new policy could have a long-term impact on the company."
Although preliminary, the findings are certain to reignite a debate about the safety of cellphones.
The final report is not due until February, he said, although preliminary findings may be disclosed over coming months.
Scientists have yet to definitively pin down its origin, although preliminary evidence points to another species of bat.
In all cases involving coalition troops there is a policy to hold formal inquiries, although preliminary reports frequently show signs of deliberate scepticism towards the claims of detainees.
Although preliminary tests were negative, blood tests later indicated exposure to the virus, and more sophisticated tests by the Centers for Disease Control and Prevention confirmed the exposure.
Final audience figures for the World Series game were not available on Monday, although preliminary estimates show that more than 20 million tuned in.
Anderson Mazoka, a wealthy businessman, has declared himself the winner of the election, although preliminary tallies put him in second place.
In addition, concerns were raised about whether the system would function on a huge scale, although preliminary tests had suggested that it would.
Although preliminary, our experiments suggest that AR as multimedia may lead to better attention and satisfaction.
Although preliminary, the results might eventually lead to replacement lungs for patients.
Although preliminary, the findings support the feasibility of oxytocin combined with PE.
