Tourism Holdings has upgraded its profit forecast for the financial year ended June, less than two months after cutting it.THL now expects annual net profits after tax of about $46 million, above its previous guidance of between $40 and $43m.The campervan operator is currently the target of two separate non-binding takeover offers.One is from a consortium led by Australian private equity firm BGH Capital and the Trouchet family interests at $3.10 a share, while an unnamed industry bidder has indicated between $3.30 and $3.40 a share.THL said bookings have rebounded strongly across all markets, while vehicle sales in New Zealand were stronger than expected.The improvement was driven by a surge in late bookings, stronger vehicle sales and favourable interest outcomes.Reported net debt at year-end was $436m, lower than forecast, although the company said this largely reflected timing differences around its June year-end balance date.Forward bookings remain positive, with North American bookings significantly ahead of last year and recent bookings from the United States more than 50 percent higher.Australia and New Zealand have also returned to booking growth after disruption linked to the conflict in the Middle East between March and June.Despite ongoing global uncertainty, THL said it was "increasingly confident" about the Southern Hemisphere summer season and saw improved opportunities for growth in Australia and New Zealand.The company provided no update on the due diligence processes being undertaken by either bidder.The company will release its audited full-year result on 25 August.